[GreenKeys] GreenKeys] 10.137 today

[William Bytheway]

Greenkeys,

Had a short QSO with Roy on 10.137 yesterday.  Roy had a little 
trouble with the packet racket just above us.  I used the audio 
spectrum analyzer display on WinPSK23 to tune the TS-940S SSB 
slope tuning and to set the notch filter.  Works kinda neat, chops 
out the offending signals.  The configuration here is a Hal ST-6 
which has been modified with RS-232.  The software I used was my 
own terminal program that converts the ST-6 BAUDOT to ASCII.  

I suggest establishing the base frequency we all use as the "MARK" 
frequency.  That way we do not have to figure out what the mid-
channel offsets are for 170, 200 or 850 Hz.  Makes it easy to 
set up your frequency using a frequency counter on signals generated
by SSB LSB or pure FSK.  My HP5303A frequeny counter seems to 
read the true pseudo-RF frequency for "MARK" using AFSK over SSB. 
Don't trust the frequency display on your SSB transceiver, it is
based on an AFSK audio frequency of zero.

73 de K7TTY
Bill Bytheway
http://www.rtty.com/bytheway